OH yes, I can relate to this problem. As mentioned, Jasper had the loss of appetite AND Diarrhea. I also have a foster cat with the loss of appetite, but no diarrhea. Steroids helped them both. Jasper does better with the 5mg pill of prednisone. Mr. Meow is doing great with the injection of depo-medrol every 3 weeks. Mr. Meow was syringe fed for 3 WEEKS before he started to eat on his own again. He only likes to eat Meow Mix Market Select dinners in a cup. Maybe your cat will like them also.